CNMG 120404 T5125 Wendeplatten - Tungaloy

Take advantage of the combination of a CVD-coated carbide grade, ISO CNMG geometry and a compact 0.4 mm corner radius for stable interrupted cutting in cast iron; order genuine inserts via Metav Werkzeuge or consult our specialists for application-specific recommendations.

CNMG 120404 T5125 Indexable Turning Insert for Turning — Tungaloy

A CNMG120404 T5125 indexable insert designed for general turning and interrupted cuts, optimised for cast iron machining with a robust chipbreaker and CVD-coated carbide substrate.

• CVD-coated carbide for durability
• Designed for cast iron and interrupted cuts
• CNMG ISO geometry, 0° clearance angle
• 0.4 mm corner radius, double-sided breaker

Reliable performance in interrupted cuts

The CVD-coated carbide composition delivers improved wear resistance and thermal stability compared with uncoated grades, making the insert particularly suitable for interrupted cutting and less stable set-ups. The tougher grade T5125 is formulated to maintain a stable cutting edge in cast iron applications, which reduces the frequency of index changes and supports a predictable machining rhythm. Effective chip control is achieved through the double-sided chipbreaker, improving surface consistency and lowering the risk of built-up edge during intermittent engagement.

Straightforward integration with ISO holders

The ISO CNMG form ensures wide compatibility with standard external turning holders and boring bars; fit is governed by form, clearance angle, tolerance class, fixing method, size and thickness. The CNMG rhombic shape with an 80° included angle and a 0° clearance specification provides a large contact area for enhanced rigidity. Specifying the correct insert geometry and tolerance class simplifies tool set-up, shortens changeover times and reduces the likelihood of assembly errors, allowing more consistent cycle times on the shop floor.

Economical choice for mixed production environments

With its focus on stability and wear resistance, this grade supports productive machining across batches that include cast iron components and occasional interruptions. The combination of CVD-coated protection and a moderate 0.4 mm corner radius balances edge strength with achievable surface finish, helping to extend usable life while maintaining acceptable part quality. For operations requiring reliable, repeatable results in everyday turning tasks, this insert represents a pragmatic compromise between durability and versatility.

For applications demanding dependable interrupted-cut performance, contact Metav Werkzeuge to specify genuine Tungaloy CNMG 120404 T5125 inserts and receive tailored recommendations; Metav Werkzeuge can be reached at info@metav-werkzeuge.com or +49 2822 7131930

Technical data

• Article number: 6850122
• Manufacturer SKU: TUN6850122
• SKU: 6850122-Tungaloy
• Model series: ISO-Drehwendeschneidplatten
• Material: carbide
• Coating/grade: T5125
• Geometry: CNMG120404
• Application: Turning

Facts

• Inscribed circle: 12 mm
• Thickness: 4.76 mm
• Corner radius: 0.4 mm
• Clearance angle: 0°
• Included angle: 80°
• Manufacturer article number: 6850122

Special features

• CVD-coated carbide
• Double-sided chipbreaker
• Cylindrical hole
• ISO rhombic CNMG form
• Suitable for interrupted cuts and cast iron

FAQ

What materials is this insert best suited for?
The CNMG120404 T5125 insert from Tungaloy is optimised for cast iron applications and performs well under interrupted cutting conditions, thanks to its tougher grade and CVD coating.

Can this insert be used in standard CNMG holders?
Yes, the insert conforms to the ISO CNMG form and fits holders that accept CNMG120404 geometry when the holder matches the size, thickness and tolerance class.

How does the T5125 grade differ from general-purpose grades?
T5125 is a tougher, CVD-coated grade intended to resist chipping in interrupted cuts and less rigid set-ups, trading slightly reduced maximum cutting speed for improved edge stability.

What surface finish can be expected with a 0.4 mm corner radius?
A 0.4 mm corner radius offers a balance between edge strength and finish quality, enabling good surface results while reducing the risk of premature chipping in interrupted operations.

Is the insert reversible or indexable on both sides?
The insert is double-sided with a chipbreaker on each active edge, allowing multiple index positions before replacement and supporting economical tool utilisation.

Manufacturer/Responsible: Tungaloy-NTK Germany GmbH, Katzbergstraße 3a, 40764 Langenfeld - Protected trademarks and product names are the property of their respective owners. Brand names and protected trademarks are mentioned solely for explanatory purposes. There is no affiliation between our company and the mentioned brands. The item offered is an original, brand-new product from the manufacturer.